Either "tiling" or "tesselation" is the usual term used.
A tesselation
It is a tessellation
yes polygons are closed figures
For example, figures like C and N are open figures, and figures like O and D are closed.
Yes quadrilaterals are 4 sided closed figures or polygons
The buliding top of a city skyline is closed
A polygon
Open
this shape has the num 5
Polygons
not sure what the answer is it think the answer is the top of building is closed not but not show how to explain why can you help
Polygons are closed, two-dimensional figures that have 3 or more sides.